In case it helps anyone, in Sunderland Road I'm now getting 214MB download and 20.5MB upload (speedtest.net). When it was tested on first installation in May I was told that eventually BT will cap it at my contractual 160MB - presumably so they can charge more for 200MB.

On the PC the 160MB is okay but I'm learning the hard way that the real speed is affected by how good the pipe and server are at whatever website you're trying to access. Of course it also depends on my PC's ability to crunch through the data that comes pouring in without choking.

Big PDF downloads are noticeably faster, though, and it seems to be making a difference on our wifi-enabled TV for BBC iPlayer. No freezing/caching.